Semi Retired Aviator

Can anybody give me some authoritative comparisons on the Magnum 91 4 stroke versus the TT F915? They are both lower end of the price spectrum, but I don't read too much bad about either.

I'm looking for power for a Hangar 9 Corsair, and whilst I have a distinct preference for an RCV 90-SP, it doesn't look as though it will fit in the cowl; too long front to back.

bbmass

My Feedback: (2)

the TT is too heavy for my tastes. Both are suppose to be very good engines

w8ye

My Feedback: (16)

The Magnum type seems more popular because it is also made as a ASP, SC, & Sanye engine. I have a Magnum 91 as well as several other sizes. I like them very well. The Magnum runs much stronger than my OS 91 Surpass I. The Magnum 91 is more of a 14-8 engine.

The Thunder Tiger is spoken favorably on here but everyone does say it is rather heavy for a 91 four stroke. Some people proclaim of the great power of the Thunder Tiger 91 four stroke. But my experience with them is that they are more of a 13-8 or 14-6 engine. They'll turn a APC 14-6 at 9000. Maybe I had a poor one?

Enjoy,

Jim

BankYank

My Feedback: (63)

Go for the magnum. I have had both and the magnum was a better engine. Runs perfect all the time and has at lest the same power as an os91. The TT on the other hand i never could get to run quit right most of the time.

Semi Retired Aviator

Thanks guys. I appreciate the input. If an RCV won't fit, then it looks like a Magnum.

RCV Engines

Just thought I would put my twopence worth in.

We (RCV) also produce an RCV91-CD engine which would fit as it is not as long as the 90SP. This engine is a much more conventional shape, however it is the same height as a 52 4-stroke rather than a 91 4-stroke (eg. Magnum 91 or TT 91). It is slightly heavier, however all the reviews and customer feedback on this engine so far has been fantastic. Coupled with a price tag of only US$229 and RCV's 2 year warranty, you may want to consider this. More information can be found on www.rcvengines.com/91cd_full.htm

Best regards
Laurenne

XJet

I hope the engines are more reliable than the link you provided :-)


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RCV Engines

Sorry, it should be:

www.rcvengines.com/rcv91cd_full.htm

Best regards
Laurenne

cruzomatic

My Feedback: (17)

I have 2 of both of them.

I liked and needed the extra weight of the TT to balance a couple of planes without any extra weight. Once broken-in, the TT is a real power house. Coupled with a 14x6 APC prop, it'll hold my 4*60 vertical, looks great.

The Mag 91 idled almost perfect right out of the box, but one did flame out on me the other day causing a deadstick of my H9 Corsair. Thank God I was able to land it without too much damage.

I like them both, If you need the extra weight up front I would suggest TT. If not then maybe Mag. Or,,,, you can go with the one that's better priced. I just bought my second Mag due to the price.

Good luck.